Monel 400

Features:
UNS N04400
Monel 400 has a wonderful corrosion resistance by many reducing media such as sulfuric and hydrochloric acids. Generally, Monel 400 has a more resistantance to corrosion by oxidizing media than higher copper alloys. Monel 400 resists pitting and stress corrosion cracking in most fresh and industrial waters. It has good resistance in flowing seawater, but under stagnant conditions, pitting and crevice corrosion is induced. Monel 400 is probably the most resistant to hydrofluoric acid in all concentrations up to the boiling points. Monel 400 is not able for its toughness, it does not show embrittlement tendency at cryogenic temperatures. It is work hardenable.
Applications:
Monel 400 is applied in these field, like Chemical process equipment, crude oil stills, gasoline and fresh water tanks, marine engineering equipment, valves, pumps and fasteners.
Products of Monel 400 Available
• Sheet
• Plate
• Bar
• Pipe & Tube (welded & seamless)
• Fittings (i.e. flanges, slip-ons, blinds, weld-necks, lapjoints, long welding necks, socket welds, elbows, tees, stub-ends, returns, caps, crosses, reducers, and pipe nipples)

• Wire

 

Monel 400 Chemical composition:

Alloy

%

Ni

Cu

Fe

C

Mn

Si

S

Monel400

Min.

63

28

 

 

 

 

 

Max.

 

34

2.5

0.3

2

0.5

0.024


Monel 400 Physical properties:

Density

8.83 g/cm³

Melting point

1300-1390 ℃


Monel 400 Alloy minimum mechanical properties in the room temperature:

Alloy state

Tensile strength Rm N/mm²

Yield strength
R P0. 2 N/mm²

Elongation
A 5 %

Monel400

480

170

35


ASTM Specifications

Pipe Smls

Pipe Welded

Tube Smls

Sheet/Plate

Bar

Forging

Fitting

B165

B725

B163

B127

B164

B564

B366


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